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RATO 6.5 Other systems
A level crossing system equipped with level crossing signals must be equipped
with a return button (PAL), if it must be possible to carry out shunting work on
the level crossing system alarm section. The return button must be positioned in
such a way that it is located near the level crossing signal. There must be an
indication concerning long alarm fault next to the return button.
The level crossing system must be equipped with a substitution switch if the
level crossing system functions are connected to the interlocking system
functions. The substitution switch must be positioned in the level crossing
system equipment room.
6.5.3.4.6 Equipment room
The level crossing system devices must be positioned in the equipment room of
the other signalling systems if the equipment room is near the level crossing.
The level crossing system equipment room must be positioned in such a way that
it is not in the level crossing sighting area.
The level crossing system equipment room must be locked with a signalling
systems key.
6.5.3.5 Level crossing system with alarm section based on the measurement
of the speed of the train
A level crossing system can be realized without alarm and road sections based
on axle counting or track circuits, when the functioning of the level crossing
system is based on the measurement of the speed of the train on the alarm
section.
The level crossing system must detect the occupation of the track section,
calculate the speed of the train approaching the level crossing and its arrival time
to the level crossing based on the change of the track impedance and based on
the calculation start the alarm. The alarm section must be dimensioned in such a
way that the requirements for warning times presented in chapter 6.5.3.2.2 are
realized, when a train approaching the level crossing is driving at the speed limit
or limits of the alarm section.
The functioning of the level crossing system must follow the requirements
presented in chapter 6.5.3.
A level crossing system with alarm section based on the measurement of the
speed of the train can be realized without the road section.
6.5.3.6 Level crossing system connected to traffic lights
A possible road junction equipped with traffic lights near the level crossing must
be taken into account in signalling systems planning and the traffic light
operation must be connected to the level crossing system operation, if necessary.
RATO 6 2009-12